“‘No,’ he repeated, and this time the word tolled in another voice, a king’s voice: not Haggard, but a king whose grief was not for what he did not have, but for what he could not give.
“‘My lady,’ he said, ‘I am a hero. It is a trade, no more, like weaving or brewing, and like them it has its own tricks and knacks and small arts. There are ways of perceiving witches, and of knowing poison streams; there are certain weak spots that all dragons have, and certain riddles that hooded strangers tend to set you. But the true secret of being a hero lies in knowing the order of things. The swineherd cannot already be wed to the princess when he embarks on his adventures, nor can the boy knock at the witch’s door when she is away on vacation. The wicked uncle cannot be found out and foiled before he does something wicked. Things must happen when it is time for them to happen. Quests may not simply be abandoned; prophecies may not be left to rot like unpicked fruit; unicorns may go unrescued for a long time, but not forever. The happy ending cannot come in the middle of the story.'”
-The Last Unicorn, p 180